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Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
We confirm build spec, lead time and delivery arrangements with you before any money moves. Prefer to talk it through first?
Inspired by Formula 1 aerodynamics, this premium rear diffuser enhances the aggressive styling of your M4 while improving airflow beneath the vehicle to help reduce turbulence and increase rear-end stability at higher speeds.
Manufactured using pre-preg double-sided dry carbon fiber and precision CNC-molded tooling , this rear diffuser delivers exceptional strength, lightweight performance, and OEM-quality fitment. The double-sided dry carbon fiber construction features a flawless carbon fiber weave on both the front and backside, ensuring a premium finish from every angle.
The aggressive Type-F1 Shark Fin design helps optimize underbody airflow while giving your BMW G82 Coupe or G83 Convertible an unmistakable motorsport-inspired appearance. Integrated into the diffuser is an F1-style LED rear fog/brake light , adding both style and functionality to your build. The LED light can be spliced into a positive and negative power source , allowing it to be wired as a running light, brake light, or custom lighting application based on your installation preferences.
Finished with a UV-resistant high-gloss clear coat, this diffuser is engineered to withstand daily driving, spirited performance, and show-quality builds while maintaining its deep carbon fiber finish.
Whether you're building a street-focused M4 or a track-inspired project, the Auto Addict USA Type-F1 Shark Fins Rear Diffuser offers the perfect combination of lightweight performance, premium craftsmanship, and functional aerodynamics.
Complete your BMW G82/G83 M4 with the premium craftsmanship of Auto Addict USA and experience the perfect combination of luxury styling, lightweight dry carbon fiber construction, and race-inspired aerodynamic performance.
If tuning is part of your plans, talk to Hoonies about the options for your car. Tuning is a separate service; fitting this part does not include a tune or guarantee a power gain.
Direct installation utilizing factory mounting locations
| SKU | Vehicle or component application | Fitting requirements |
|---|---|---|
| AA_G80_JC_HD408_PRO | 2021–2026 BMW M4 G82 2021–2026 BMW M4 G83 Convertible | Check the component details and original equipment before fitting. |
Delivery is quoted for this product. Contact Hoonies for a delivery quote and confirmation of availability before ordering.
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
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